rŭbĕus (rŏbeus and rŏbus; cf. Fest. s. v. robum, p. 264 Müll.), a, um, adj. [rubeo],
red , reddish : color, Varr. R. R. 2, 5, 8; Col. 6, 1 fin. ; 8, 2, 8; Pall. Mart. 11, 2: bos, Col. 6, 1, 2: asinus, Pall. Mart. 14, 3.
rubeus adj. rubus, of the bramble-bush : virga, a bramble-twig , V. ...
An Elementary Latin Dictionary